Supercharger



Dec. 13, 1932. E. M. WHITE 1,890,708

SUPERCHARGER Filed May 31, 1930 Patented Dec. 13, 1932 i I UNITED STATES "ERNEST ivi. WHITE, LosANGEIiEsQCALIFonNrA PATENT OFFICE serian-CHARGER This invention relates to superchargers, and hasfor anobje-ct the provision ofv a superchargerwhich is so-constructed as to give increased; efficiency to Vinternal combustion engines operating under vdiil'erent .workin conditions. The function and ypurpose o superchargers is now well understood in the art, and the present form ofthe Vinvention presents a supercharger which -is simple of ccnstruction, easily assembled, inexpensive of manufacture and one which may be read.- ily installed for use with existing types of internal combustion engines vwithout eXtensive modication or reconstruction of parts. In fact,l any standard form of engine utilizing the usual carburetor may embody the improved superoharger. The invention is so constructed as to give maximum power to the engine.

In practicing anembodiment of the invention, I have provided a supercharger adapted to operate in sucha manner as to allow the air drawn therethrough to be heated, the arrangement being'such that no complicated construction results orisnecessary. f Other objects will appear as the description proceeds, and with: the objects above enumerated, the said invention Vconsists in the noveland useful provision, formation, construction, association, and relative arrangement of parts, members and features, all as shown in certain embodiments inthe accompanying drawing, described generally, and more particularly pointed out in the claims. VInthe drawing: y Y y Figure 1 is a longitudinal'sectional view of one form of supercharge'r,

Figure 2 isa sectional view'on the line 2 2 of Figure 1, i Figure 3 is a cross sectional view of a modilied form of supercharger utilizing the hot air principle, and y Figure 4 is a cross sectional view lied form of supercharger. Y

Referringfwith particularity to the drawing, the supercharger shown in Figuresrl and 2 is designated asan entirety by A,^that in Figure 3 by B, and in Figure 4 by C. `The form of the invention designated aszA inof a modi- 9 cludes adraft tube a, the approximate cen- Application led May 1930'. Serial Ilo.` 458,806.

tral portion l of which has a bore of uniform diameter with portions extending from such zone 1 flaring outwardly, as shown at 2 and 3. This is of the ordinary Venturi tube construction. with the possibleexception that a 5`5, part of uniform diameter 4 is associa-ted with i the flared .portion 3. ,This portion 4 is likewise provided with a plurality of longitudinally extending spaced slots 5. An annular flange 6 is formedbetween the parts 3 and 60 4, and an annular flange? is formed on the p-art 2. A nozzle Z) is adapted to be received within the mouth of the part 4 and to extend a certa-in distance within thel part 3. This nozzle hasa bore resembling the inner bore of 65l a Pitot tube in that it has a flared mouth 8 'i leading to a restricted zone 9 with the bore againflaring or tapering from said restricted zone as shown at 10. Furthermore, this nozzle is constructed so as to be secured to ends '(0, ofthe part 4 as shown at 1'1. The periphery or particularly that portion l2 of the nozzle is spaced from the inner surface of the part 4.; A tube 13 `may receive an end portion of the draft tube a and bear against the flange 75y 7. Thisftube l?) may lead to the air intake of a carburetor, not shown. The supercharg- I er may includethe elements just described or it mayr utilize in addition a member c. This member c is formed with .a bulbular or 80` curved chamber portion 144, with said member c joined with the flange' 6 by any suitable means such as shown atl. 'lhis'bulbular part of the curvedd chamber portion communicates'with the part 16 of restricted diameter. 555` This member may in turn be associated with an air cleaner, notrshown, of any construction.V

The operation, uses and advantagesY of the device A are as follows: e0V During intake strokes of aninternal combustionengine associated with a carburetor, airis drawn through the carburetor. If now the'air intake opening of the carburetor is associated with the draft tube a, air will Q5 be drawnthrough said tube. In particular, air will be passedboth through the nozzle b and the openings or slots 5. There will be a zone of low pressure-created forward of the nozzleand within the draft tube, theoreti- 1120 created at the center of the WhirLand this.- turbulence or whirling action of the air plus ing a cork to force the same into the neck of" a bottle. This function is similar to a'whirl- Wind, in that a region of low pressure is thezone of low pressure 17 functions to increase the Weight' of air received within the draft tube in the manner just described.y

The form of the invention designated as B includes'a-draft tube b, one end of'which is `formed lWithan enlarged chamber portiony 20 and the otherend being provided with an annular'flange-Ql whereby the tube may be secured'to a tube 22 communicating inthe presentinstance withthe air intake opening of a carburetor. Furthermore, the said draft tube above the portion 20 is provided with an annular flange 23. Adapted to be secured to the flange 23 is atube 24 communicating with a stove 25. This stove constitutes a casingorshell 26 surrounding a hot pipe 27 which may be the exhaust manifold pf an internal combustion-engine. This caslng 1s spacedslightly from the pipe27, as shown at 28 and 29. The pipe 24 is provided with longitudinally extending spaced slots 30" and surrounding said pipe isan annulus 31 provided with oneor more slots 38y adapted to register at portions withthe slots 30 and to regulate the amount of air passed' through said slots() into the tube 24. A nozzle e is secured tothe mouth of the enlargedchamber portion20, as shown at 33. This nozzle has a bore correspondingto the usual Pltot tubeand the Pitot tube opens within the-draft tube d, particularly beyond thepart AVIn operation, assuming thatthe device` is securedto or associated with thefair intake ofa carburetor, airis drawn through the draft tube d. Warm air would .be drawn through the tube 24, the air being heated by the hot pipe 27, into the ydraft-tube, and colder air would be drawn through the nozzle e. Likewise air might. be drawn through the slots 30. A region of'low pressure would be created at the exit end of the said nozzle or particularly the zone 34 which iwould tend to draw agreaterweight ofV air throughthe draft'tube al than would otherwise be drawn therethrough. A jet action wouldoccur at the zone 35. This formvof'sup'ercharger will Workl with maximum efficiency under. varying conditions and supply heated-air to the carburetor. Turbulence off the air islike:- wise `createdl by the air being drawn. through thejdraft tube.

the tube 24 and into the chamber bounded by the curved portion 20. In this respect, the device functions somewhat similarly to the supercharger A.

The form of the invention C includes a draft tube adapted to operate in conjunctionnvith infusers g and L. The infuser le. functions as afnozzle. The infusergfis belllike inform and is fitted so as to be in part received Within the mouth or infuser' end of The nozzle or infuser la, is likewise provided with a tapered or flared opening 40 and with a portion of uniform diameter. 4l. The-portion 4l has a greater diameter than a portion 42 which leads to the mou=th=ofthe infuser'. Each ofthe. devices f, g, and v are slightly-spaced apart, as shown inthe figure. This device is adapted to op.- erate infconjunction with the air intake-.of a carburetor andlair lwould bevfdrawn as between ythe mou-th orinfuser end ofsthe draft tube'andthe infuser g andlikeWise-between theI infuserg and aand through lthe opening. of said' infuser. A` zone of low.l pressure would bel createdby the infusery L whereas air passedasv between Ythe -drafttube f and gy andfthe infuser g andh would have afjet ac.- tion, tendency being to increase the Weight of airthat would :ordinarily .be drawn-.through thedraft tube. The partlof uniform diameter 4ly would tendito. provide azezoneof reduced pressureupon passage of airfthrough the flared end of said` infuser; This loW pressure area which would be approximately inthe zone.43 would tend; to cause moreair to bel drawn .through A thef space included between theinfuser ends. .It is important to note Athat all' of. thesuperch-argers justdescribed areadapted to beoperated bysome member or device which 'is` drawing. the air through the saidl device as distinguished from that. type of" apparatus wherein some injector orrbloweror they like, is placed forward 'of the drafting. tubes or infusersi This Adevice is adapted to `be operated 'solely by an associated object.

All various adaptations or uses ofthe in,- vention are contemplated by this-invention Whether the supercharger be used for the purpose of drawing air or otherfluid therethrough-or'whether said.Y invention is associated with an internall combustionengine ory exhauster, pump or: the, like.-

It is obvious that various changes and modifications and` variations may,- be made in practicingthe invention in departure from the particular showing of the drawing without departingk from the true .spiritathereof I claim: f

l. ,In a supercharger, a `Venturi-type draft tube havingentrance and exit portions, a nozzle-.fittediwithin the entrance portion ,of the draft tub-e. and having` aL Venturi-type bore; ,and said nozzle Ibeing-provided withvl a flange-:adapted f to close; direct entrancel into fus the draft tube, said draft tube being formed with an angularly cut slot adjacent the entrance of said tube, said draft tube being adapted for association with an exhauster at the exit end thereof, and whereby when said exhauster is in operation, fluid is drawn through said nozzle and said slot, the said nozzle creating a low pressure area and the said slot inducing a whirling motion to the fluid whereby a greater weight of air is passed through the draft tube.

2. In a supercharger, a Venturi-type draft tube having a plurality of slots formed therein adjacent the entrance end thereof, a nozzle having a Venturi-type bore, said nozzle positioned within and having a portion closing the direct entrance end of said draft tube, and a chambered member encircling and having a portion joined to said draft tube at a point beyond the slots therein, said draft tube adapted to be associated with an eXhauster at the eXit end thereof, said chambered member adapted to be connected with an air cleaner, whereby upon operation of the eXhauster a low pressure area within the draft tube will be created by said nozzle and a whirling moticon imparted to Huid by the slots in the draft tu e.

3. In a supercharger, a Venturi-type draft tube having entrance and exit portions and a plurality of angularly disposed slots formed therein adjacent the entrance end thereof, a nozzle having a Venturi type bore and lateral flange formed thereon, said nozzle being aX- ially mounted within said draft tube and having a flange thereon closing the direct entrance end thereof, and a chambered member enclosing the entrance portion of said draft tube, said draft tube adapted to be interconnected with a. suction creating device at the eXit end thereof and said chambered member to an air cleaner, said nozzle creating a low pressure area and the slots a whirling motion to fluid whereby a greater weight of air will be passed through the draft tube during operation of the suction device.

4. In a supercharger, a draft tube having entrance and exit portions, a nozzle having a Venturi-type bore, said nozzle mounted in the entrance portion of said draft tube and having a lateral portion closing the direct entrance end thereof, and a chambered member connected-to and communicating with the bore of said draft tube.

In testimony whereof, I have signed my name to this specification at Los Angeles, California, this 9th day o-f October, 1928.

ERNEST M. WHITE. 

